修改打印逻辑，先找默认打印机，未找到则直接返回

jikimo_printing/models/jikimo_printing.py

@@ -20,7 +20,7 @@ class JikimoPrinting(models.AbstractModel):
         printer = self.env['printing.printer'].get_default()
         if not printer:
             _logger.error("未找到默认打印机")
-            return
+            return False
 
         # 生成二维码
         qr = qrcode.QRCode(version=1, box_size=10, border=5)
@@ -57,6 +57,8 @@ class JikimoPrinting(models.AbstractModel):
         pdf_buffer.close()
         temp_image.close()
 
+        return True
+
     def print_pdf(self, pdf_data):
         """
             打印PDF
@@ -64,9 +66,7 @@ class JikimoPrinting(models.AbstractModel):
         printer = self.env['printing.printer'].get_default()
         if not printer:
             _logger.error("未找到默认打印机")
-            return
-
-        _logger.info("PDF打印开始")
+            return False
 
         pdf_data_str = pdf_data.decode('ascii', errors='ignore')
         decoded_data = base64.b64decode(pdf_data_str)
@@ -78,9 +78,10 @@ class JikimoPrinting(models.AbstractModel):
         
         # 获取PDF内容
         pdf_content = pdf_buffer.getvalue()
-        _logger.info(f"处理后的内容前20字节: {pdf_content[:20]}")
         
         printer.print_document(report=None, content=pdf_content, doc_format='pdf')
         # 清理资源
         pdf_buffer.close()
-        _logger.info("PDF打印结束") 
+
+        _logger.info("成功打印PDF")
+        return True